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  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<!-- 算术操作符 → 比较操作符 → 逻辑操作符 → "="赋值符号 -->

<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>操作符优先级</title>
  <script type="text/javascript">
    var numa, numb, jq1;
    numa = 5;
    numb = 2;
    jq1 = numa + 30 > 10 && numb * 3 < 20;
    jq2 = ((numa + 30) / (7 - numb)) * 3
    document.write("jq1的值是:" + jq1 + "<br>");
    document.write("jq2的值是:" + jq2);
  </script>
</head>

<body>
</body>

</html>